In a field of ripening corn I came to a place which had been trampled down by some ruthless foot; and as I glanced amongst the countless stalks, every one of them alike, standing there so erect and bearing the full weight of the ear, I saw a multitude of different flowers, red and blue and violet. How pretty they looked as they grew there so naturally with their little foliage! But, thought I, they are quite useless; they bear no fruit; they are mere weeds, suffered to remain only because there is no getting rid of them. And yet, ...